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From Arun Suresh <asur...@apache.org>
Subject [ANNOUNCE] Apache Hadoop 2.9.0 has been released
Date Sat, 18 Nov 2017 16:42:52 GMT
Hi all,

We are pleased to announce the release of Apache Hadoop 2.9.0. This is the
first release of Hadoop 2.9 line and will be the starting release for
Apache Hadoop 2.9.x line - it includes 30 New Features with 500+ subtasks,
407 Improvements, 790 Bug fixes new fixed issues since 2.8.2.

Please refer to the Apache Hadoop Release page [1] for download
instructions.

Major features include:
* Application Timeline Service v2 [2]
* YARN Federation [3]
* HDFS Router based Federation [4]
* Opportunistic Containers [5]
* YARN Web UI v2 [6]
* API for Scheduler Queue (Re-)configuration for CapacityScheduler [7]
* Container Update for CapacityScheduler [8]
* Hadoop Resource Estimator [9]

More details on all the features, subtasks and bug fixes can be found in
the change log [10] and release notes [11].

Although this release has been tested on fairly large clusters, production
users can wait for a subsequent point release which will contain fixes from
further stabilization and downstream adoption.

Thanks to all the many contributors who helped with this release!

Cheers
Subru and Arun

[1]: http://hadoop.apache.org/releases.html
[2]:
http://hadoop.apache.org/docs/r2.9.0/hadoop-yarn/hadoop-yarn-site/TimelineServiceV2.html
[3]:
http://hadoop.apache.org/docs/r2.9.0/hadoop-yarn/hadoop-yarn-site/Federation.html
[4]:
http://hadoop.apache.org/docs/r2.9.0/hadoop-project-dist/hadoop-hdfs/HDFSRouterFederation.html
[5]:
http://hadoop.apache.org/docs/r2.9.0/hadoop-yarn/hadoop-yarn-site/OpportunisticContainers.html
[6]:
http://hadoop.apache.org/docs/r2.9.0/hadoop-yarn/hadoop-yarn-site/YarnUI2.html
[7]:
http://hadoop.apache.org/docs/r2.9.0/hadoop-yarn/hadoop-yarn-site/CapacityScheduler.html#Changing_queue_configuration_via_API
[8]:
http://hadoop.apache.org/docs/r2.9.0/hadoop-yarn/hadoop-yarn-site/CapacityScheduler.html#Updating_a_Container_Experimental_-_API_may_change_in_the_future
[9]:
http://hadoop.apache.org/docs/r2.9.0/hadoop-resourceestimator/ResourceEstimator.html
[10]:
http://hadoop.apache.org/docs/r2.9.0/hadoop-project-dist/hadoop-common/release/2.9.0/CHANGES.2.9.0.html
[11]:
http://hadoop.apache.org/docs/r2.9.0/hadoop-project-dist/hadoop-common/release/2.9.0/RELEASENOTES.2.9.0.html

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